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, To aZZf whom it may concern;

Application filed UNITED STATES P ENT- ()rr cnu J ooeBnnom oF BASLE, SWITZERLAND, ASSIGNOR TO THE socirrrn JDURAN HUGUENIN a co, or Bests, on sans PLAon.

BLUE eve.

SPECIFICATION forming part oi Letters Patent No. 497,114, dated May 9, 1893.-

Be it known that'LzMoos BRACK, a citizen of Switzerland, residing at Basle, Switzerland,

have invented certain new and useful Improvements in the Manufacture'of Coloring- Ma'tters Obtained by theAction of Amines of the Fatty Series upon Galloc'yanine,(torwhich I have received Letters Patent in France,

dated September 8, 1890, No. 208,111; in Germany, dated September 11, 1890, No. 57,459,

andin England, dated November 17, 1890, No.

, 18,526,) of which the following is a specification. a

is ylamine, trimethylamine; monoethylamine,

I have found that the amines of thefatty series such as monomethylamine, vvdimethdiethylamine, monopropylamine dipropylamine, monoisobutylamine, monoamylamine,

or diamylamine can condense with the gallocyanlnesproducingnew coloring mattersvarying from violet to greenish blue; The condensation of the gallocyanines with monomethylamine, dimethylamine, "trimethyla- .mine, monoethylamine, monopropylamine,

monoisobutylamine; or monoamylamine, is easily obtained either with the aqueous'solutions of the said amines or when used in their anhydrous state; while it is preferable to use the diethylamine, dipropylamine or diamylamine anhydride to obtain the reaction.

The following is an example of the manner v in which my invention may be practiced:

Into a vessel placed in a water bath and provided with a suitable agitating device are introduced :-fifty kilos gallocyanine in powder (obtained from gallic acid and nitrosodimethylaniline hydrochloride) and fifty kilos monomethylamine in concentrated aqueous solution or in anhydric state. The mixture is agitated for one hour at ordinary temperature. 100 centigrade in order to complete the reaction and remove by distillation the excess of the amine which is collected inwater. The dried mass is in the form of a dark brown powder and, according to the. amine used, has

amore or less greenish aspect.

The'above named proportions are only given by way of example "and may be varied, and

Then the whole is heated at 90 to November 13, I891. serial no; 411,798 (No speeiniens.) Patented in France September a, 189(Lliio. 208,11l; ini'iemany September 11, I890, No 57,459, min England November 171 1890, No.18,526- i substances employed: Instead of gallocya ine from gallic acid, gallocyanine from tannin or its'analogues, or from the methylic ether of gallic acid, may be used. Instead of the monomethylamine there may be used either in concentrated aqueous solution or in their the following, variations may be made in the anhydric state, either dimethylamine or trivmethylamine, or monoethylamine, or monopropylamine, or monoisobutylamine or monoamylamine' Instead 'of the monomethyla mine, there may also be used in the anhydnac state, forty kilos of diethylamine or of di propylamine or of diamylamine.

The class of products resulting from this pro cess, as above exemplified, are nearly insoluble in water and easily soluble in alcohol and acidulated water. They dye the mordanted fibers in shades varying from violet to green.- ish blue. They give on chromed wool, bluer tints than gallocyanine. When printed on cotton with metallic mordants, they give shades varying from blue to greenish blue. On unm'ordanted wool they produce almost no shade having no atfinity for this fiber when unmordanted. They produce a blue color when dissolved in concentrated sulphuric acid and colors varying from violet brown to claret in diluted sulphuric acid. J A blue color is obtained in concentrated acetic acid and violets more or less bluish in diluted acetic acid. When these acid solutions are rendered allra line by means of soda or any other alkali, a flocky precipitate is produced.

' Myinvent'ion beingaslbelieve, embodied in'a class of products, I do not wish to be understood as limiting myself to the qualities peculiar to any individual of that class to theexclusion ofthe others. For example, the monomethylamine which contains generic and 1 amino which contains the greatest numberoi atoms of carbon. Thus, in the following list; i the number in parentheses after each am no.

indicates the number of atoms ofcarbonit contains: monomethylamine (1), .dimethylamine (2),mon oethylamine (2)trim ethyla n1ne (3), monopropylamine (3), diethylamine (4,)

. isobuthylamine (4), monoamylamine (5), di- -propylamine (6), diamylamine (10). Consequent-lythe diamylamine will give the greenest shades of blue as compared with the other dyestuffs whatever may be the fiber on which it is compared with the other, provided that the shades obtained with all the dyestuffs are made on the same mordant or on the same fiber when compared with each other.

I claim- Y -1.; The process for production of coloring matters consistingin the heating of an amine of the fatty series with a gallocyanine, sub stantially as described.

2. As an article of manufacture, a coloring matter obtainable by the condensation of an amine of the fatty series with gallooyanine which is substantially insoluble in water and soluble in acidulated water, which dyes fibers mordanted with chromium salts in shades varying from violet to greenish blue, which dyes wool mordanted with chromium salts bluertlnts than gallocyanine from gallic acid and which gives shades varying from blue to greenish blue when printed on cotton with a chrome mordant, substantially as described. In testimony that I claim the foregoing as my invention 1 have signed my name in presence of two subscribing witnesses. J AUOB BRACK. Witnesses:

GEORGE GIFFORD, CHARLES TnTAz. 

